期刊
PLANT BREEDING
卷 128, 期 5, 页码 436-442出版社
WILEY
DOI: 10.1111/j.1439-0523.2009.01612.x
关键词
Hordeum vulgare; Hordeum vulgare ssp; spontaneum; pathogen resistance; migratory endoparasites; resistance breeding; genetic resources; biotic stress
资金
- Stiftung Schleswig-Holsteinische Landschaft (Kiel, Germany)
- German federation for private plant breeding research (GFP, Bonn, Germany)
- Nordsaat GmbH (Bohnshausen, Germany)
Root-lesion nematodes of the genus Pratylenchus are significant pests in crop cultivation throughout many parts of the world. A study was initiated to determine the resistance of Hordeum vulgare and H. vulgare ssp. spontaneum (wild barley) against one major representative of the genus Pratylenchus, P. neglectus. A glasshouse test was first established. Barley seedlings were grown in 20 cm3 tubes filled with sand. Each plant was inoculated with 400 P. neglectus juveniles. After 12 weeks of cultivation nematodes were isolated from roots and sand using a misting chamber. The nematodes were counted under a microscope. A representative collection of 565 barley and wild barley accessions was tested in this way. The average number of nematodes per accession ranged from 350 to 12 000. In a verification experiment, 35 accessions with low and high infection rates were tested. This experiment identified a number of accessions with low infection rates. The perspectives for future breeding of barley cultivars resistant to root-lesion nematodes are discussed.
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